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RODMOND GIBBONS, OF SAN FRANCISCO, CALIFORNIA. Lettersv Patent No.72,385, dated .December 17, 1867.

IMPROVED STRAP-PASTBNINGS.

TO ALL WHOM IT MAY CONCERN:

Beit known that I, RODMOND GIBBoNs, of San Francisco, in the county ofSan Francisco, and State of California, have invented an Improvement inStrap or Band-Fastenings, of which the following is a, full, clear,` andexact description, reference being had to the accompanying drawings,making part of this specification.

The invention relates to the construction of a clamp or fastening, forseeurelygholding the ends of elastic bands subjected to strain; and theinvention consists in combining two plates,-(or two portions of asing'leplate doubled together,) in one of which a long groove is sunk, whileupon the other is a corresponding long tooth or spur, bent in` suchmannerthat when the two plates are brought together, with the band-endbetween them, the band will beerowded into the groove by the spur, sothat by securing theplates thus in contact with the opposite surfaces ofthe band, the end of the band will be tightly pinched, and'in suchmanner that strain upon it will draw the band against the sharp edge ofthe spur, and will thus tend, under any ordinary strain, to cramp theend into the groove and prevent its withdrawal.

The clamp-plates may be made with a double set of grooves and spurs, tohold the two opposite ends of' a band, or the adjacent ends of twobands, or maybe made with one set only to hold one end of a band.

The drawings represent a clamp embodying my invention, they showing thesame in its application to the opposite endsv'of an elastic band. l j jA shows the outer plate; B, tho inner plate, having tho opposite ends ofthe outer plate turned over its opposite ends; C is a cross-sectionthrough the plates.

a denotes the band, the end or ends of which are to be held. b, theclamping-device, in which c denotes one platte or portion of plate, andd the opposite one. The outer plate, c, is shown as having twolongggrooves, e, struck down into it from its inner side. rEhe innerplate, d, is incis'crl, as seen at f, and a long tooth or spur, g, isturned in at this incision, the edge projecting in beyond the innersurface of the plate, and towards or into the opposite groove, e, whenthe plates are placed together, as seen at C. At vthe opposite ends ofone plate .are two projections, L, which, when the plates are broughttogether, with the band-ends between them, are turned over the ends ofthe other plate, as seen at B.

When the clamp is made of one plate only, but one of 'theseconfining-lips or books will be needed, as will be readily understood.-When the end of the band is inserted between the plates (projecting inbeyond the groove and spur, as seen, at C,) and the plates are confinedtdgether by the lips L, the band will be pinched between the edge of thes'pur and the opposite surface 'of the other plate, and will be presseddown into the opposite groove by said spur. When the band is newexpanded or drawn outwardly, each end thus confined is pulled againstthe edge of' the spur, which enters the surface or libres of the band,and confines the end securely in place, or prevents it from being drawnfrom between the plates.

The device thus made is applicable wherever the ends of woven elasticbands are to be connected together,

as in pocketbook straps, and similar confining-bands, and in manycaseswhcre one end of an elastic is to be connected to a buckle or otherdevice, or where an elastic is desirable to lengthen out a band orstrap, as sug gested by the drawing at A, where, by means of the elasticand the two buckles, a. suspender-or other strap maybe lengthened byapplying onebuckleto one part and the other buckle tothe other part, aswill be readily understood.

I claim the band-fastening, composed of thc two plates or portions ofplate confined together, one plate having a tooth or long spur, whichprojects downA into or towards a groove in 'the opposite plate,substantially as shown and described.

v RODMOND GIBBONS.

Witnessess' 'A. D. ING, ALFRED BAnsrow.

